foy9999
Member
- Messages
- 264
- Location
- East Kilbride
Hi
I'm starting out doing repairs on thin sheet metal (1mm) and getting conflicting info re pressure...
The table in my BOC welding guide suggests .14 BAR or 2 lbf/in2 for both with a number 2 nozzle
This doesn't seem to be hot enough to melt the rod into the weld-pool
Looking at online resources and YouTube videos they are suggesting about .3 BAR or 4 lbf/in2
I started out with this setting but the torch kept going out as soon as I tried to add the oxygen. I'm thinking it's perhaps too much pressure for such a small nozzle
The other thing I'm not sure about is can you let the flame melt the rod or does it have to be the weld-pool which does this?
Reason I'm thinking the former is when (failing) to use Lumiweld kits they always say it only works if the object being welded is hot enough to melt the rod
I'm starting out doing repairs on thin sheet metal (1mm) and getting conflicting info re pressure...
The table in my BOC welding guide suggests .14 BAR or 2 lbf/in2 for both with a number 2 nozzle
This doesn't seem to be hot enough to melt the rod into the weld-pool
Looking at online resources and YouTube videos they are suggesting about .3 BAR or 4 lbf/in2
I started out with this setting but the torch kept going out as soon as I tried to add the oxygen. I'm thinking it's perhaps too much pressure for such a small nozzle
The other thing I'm not sure about is can you let the flame melt the rod or does it have to be the weld-pool which does this?
Reason I'm thinking the former is when (failing) to use Lumiweld kits they always say it only works if the object being welded is hot enough to melt the rod